Research on Operational Status and Evaluation Method for Aging Characteristics of Composite Insulators

The paper carries out the particular inspection about operational status and aging characteristics of composite insulators of 110 kV and 330 kV voltage level in Shaanxi grid at present,studies hydrophobicity performance,electrical performance,material capability and mechanical properties through related experiment,and analyzes the influence of multiple factors on the operational status.Based on which,this paper proposes evaluation indicators and its state classification,formulates grading standards and classification range for each composite insulator,and introduces weight to distribute different evaluation indicators.Indicators linear weighting method is applied in composite insulators comprehensive evaluation.Based on the results and operation condition,the paper formulates reasonable operation and maintenance strategy and provides a technical guidance and assistance for line management.